3D Animation: walking cycle

My walking cycle for my 3D Animation class., using R. William's basic walking cycle guideline. Not perfected yet.

I followed weight catch and angle of the leg, etc. accordingly, but it makes the walk seem like an angry series of steps as opposed to a bouncy/leisurely cartoon walk. I think part of the reason is because the back is tilted too much forward.. and the shoulders should be more playful. Not supposed to be a realistic, regular-basis walk.